| Challenger Scheveningen | 07/19 12:20 | 26 | [96] Ruben Bemelmans v Gleb Sakharov [191] | 6-3,2-6,6-3 | |
| Challenger Scheveningen | 07/18 09:00 | 25 | [96] Ruben Bemelmans v Sebastian Ofner [156] | 6-2,6-0 | |
| Wimbledon | 07/07 17:15 | 25 | [42] Kevin Anderson v Ruben Bemelmans [124] | 7-6,6-4,7-6 | |
| Wimbledon | 07/05 13:10 | 24 | [124] Ruben Bemelmans v Daniil Medvedev [49] | 6-4,6-2,3-6,2-6,6-3 | |
| Wimbledon | 07/03 16:05 | 23 | [258] Tommy Haas v Ruben Bemelmans [124] | 2-6,6-3,3-6,5-7 | |
| Wimbledon - Qual. | 06/29 14:00 | - | [124] Ruben Bemelmans v Gerald Melzer [144] | 6-4,7-5,6-3 | |
| Wimbledon - Qual. | 06/28 14:35 | 45 | [124] Ruben Bemelmans v Mathias Bourgue [149] | 6-4,3-6,6-3 | |
| Wimbledon - Qual. | 06/26 11:30 | 44 | [124] Ruben Bemelmans v Tristan Lamasine [196] | 3-6,6-1,6-3 | |
| ATP Halle - Qual. | 06/17 09:00 | 45 | [120] Ruben Bemelmans v Lukas Lacko [109] | 4-6,3-6 | |
| ATP Stoccarda - Qual. | 06/11 08:00 | 46 | [125] Ruben Bemelmans v Peter Gojowczyk [141] | 4-6,6-7 | |
| ATP Stoccarda - Qual. | 06/10 09:50 | 45 | [125] Ruben Bemelmans v Yasutaka Uchiyama [181] | 1-6,6-3,7-6 | |
| Challenger Surbiton | 06/08 09:30 | 25 | [123] Sergiy Stakhovsky v Ruben Bemelmans [125] | 6-2,6-4 | |
| Open di Francia - Qual. | 05/23 08:00 | 44 | Marco Trungelliti v Ruben Bemelmans | 6-7,6-2,6-3 | |
| Challenger Busan | 05/16 03:50 | 25 | [126] Ruben Bemelmans v Austin Krajicek [291] | 3-6,3-6 | |
| Challenger Seul | 05/13 02:00 | 28 | [137] Ruben Bemelmans v Thomas Fabbiano [133] | 4-6,1-6 | |
| Challenger Seul | 05/12 02:00 | 27 | [200] Hiroki Moriya v Ruben Bemelmans [137] | 3-6,1-6 | |
| Challenger Seul | 05/10 02:00 | 26 | [319] Luke Saville v Ruben Bemelmans [137] | 4-6,6-3,5-7 | |
| Challenger Seul | 05/09 01:30 | 25 | [219] Brydan Klein v Ruben Bemelmans [137] | 4-6,6-3,1-6 | |
| Challenger Gimcheon | 05/03 02:00 | 26 | [132] Ruben Bemelmans v Liam Broady [394] | 1-6,6-7 | |
| Challenger Gimcheon | 05/01 06:30 | 25 | [132] Ruben Bemelmans v Marinko Matosevic [344] | 6-1,7-6 | |
| ATP Miami Qual. | 03/21 19:40 | 45 | [166] Tim Smyczek v Ruben Bemelmans [139] | 7-5,6-1 | |
| ATP Miami Qual. | 03/20 21:10 | 44 | [139] Ruben Bemelmans v Jozef Kovalik [129] | 1-6,7-5,6-3 | |
| Challenger Drummondville | 03/19 17:00 | 29 | [154] Ruben Bemelmans v Denis Shapovalov [253] | 3-6,2-6 | |
| Challenger Drummondville | 03/18 16:30 | 28 | [243] John-Patrick Smith v Ruben Bemelmans [154] | 4-6,1-6 | |
| Challenger Drummondville | 03/17 17:40 | 27 | [154] Ruben Bemelmans v Gleb Sakharov [276] | 6-4,6-7,7-6 | |
| Challenger Drummondville | 03/16 17:55 | 26 | [154] Ruben Bemelmans v Liam Broady [330] | 6-4,7-5 | |
| Challenger Drummondville | 03/14 18:20 | 25 | [154] Ruben Bemelmans v Yannik Reuter [214] | 7-5,6-1 | |
| ATP Indian Wells - Qual. | 03/08 00:25 | 44 | [154] Ruben Bemelmans v Norbert Gombos [114] | 4-6,6-1,3-6 | |
| Challenger Yokohama | 03/02 02:50 | 26 | Ruben Bemelmans v Kaito Uesugi | 4-6,6-3,3-6 | |
| Challenger Yokohama | 02/28 06:25 | 25 | Ruben Bemelmans v Lloyd Harris | 6-3,6-4 |